Carl carlson



(No Model.)

0. OARLSON.

BAND UUTTER AND EEEDEE.

No. 430,600 Patented June 17, 1890.

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. UNITED STATES PATENT OEEIoE.

CARL CARLSON, OF MINNEAPOLIS, MINNESOTA, ASSIGNOR OF TWO-THIRDS TO ANNA JOHNSON AND JOHN A. OLSON, BOTH OF SAME PLACE.

BAN D-CUTTER AND FEEDER.

SPECIFICATION forming part of LettersPatent No. 430,600, dated June 17, 1890.

Application filed June 12, 1889.

To all whom it may concern:

Be it known that I, CARL OARLsON, of Minneapolis, in the county of Hennepin and State of Minnesota, have invented certain new and useful Improvements in Band- Cutters, of which the following is a specification.

My invention relates to band-cutter attachments to thrashingmachines; and it consists generally in the construction and combination hereinafter described, and particularly pointed out in the claims.

In the accompanying drawings, forming a part of this specification,Figures 1 and 2 are opposite side elevations of my improved bandcutter. Fig. 3 is a plan View of the same. Fig. 4 is a vertical longitudinal section on line 00 0c of Fig. 3. Figs. 5 and 6 are details.

In the drawings, 2 represents the feed-table of the machine, having the inclined portion 3; 4, a suitable side wall or partition separating the grain from the operating mechanism. Secured upon the feed-table 2, outside the partition 4, is the forked standard 5, in suitable bearings in the forks of which is supported the shaft 6, which is rotated by suitable connections with the thrasher machinery. Arranged upon the shaft 6 is the screw 7, which engages the toothed wheel 10, rigidly secured to the shaft 11, also turning in suitable bearings supported upon the standard 22. This standard is secured upon the shaft 6 by means of the sleeve 26, surrounding the shaft loosely, the foot of the standard having a pin 23, passing through an ear 24, and provided with a spring 25, bearing against the ear, the tension of the spring being adjusted by means of a suitable nut or set-screw on the end of the pin bearing against the spring. The shaft 6 is also provided with the crank 8, to which is pivoted the pitman 9, carrying the knife 13. This pitman depends from the crank to the level of the base, where it is bent so as to extend horizontally, preferably, in a groove 12 on the under side of the feedtable and transversely thereof, the knife 13 extending its edge upward through the slot 30. This knife is provided with a downwardlycurved slot 14:, through which passes the pin 15, rigidly secured transversely of said slot 30 and underneath the same, a roller 31 be- Serial No. 314,038. (No model.)

ing arranged to support the knife, whereby as the knife is reciprocated by the pitman it is also moved vertically through the slot 30. The rotary movement of the crank also gives a vertical motion to the end of the pitman coupled to it. The adjustment is so made that the vertical movement imparted by the crank to the knife-shaft alternates with that given by the curved slot and pin, whereby as the knife is driven forward by the rotation of the shaft 6 the inner end of the knife is raised higher than the outer end, so that a drawing-cut is given by it, while on the return movement the inner end is dropped and the outer end thrown up by the pin in the curved slot, so as to give a similar drawingcut in the opposite direction.

The shaft 11 extends preferably parallel with and almost directly above the knife, and is provided with a series'of prongs or forks 19, made preferablyof steel wire with a slight backward bend near the outer extremity. These forks serve to seize the bundles of grain thrown upon the feed-table and to carry them over the knife and from the knife over to the feeder.

The shaft 11 is provided with a sleeve 26, to which is preferably secured by a set-screw or other suitable means the arm 16, extending backward over the feed-table, a similar arm 31 being pivoted to the end of the shaft 11. Rigidly secured to the ends of the arms 16 and 31 is the shie1d-bar 17, which is thus supported above the table normally parallel therewith and at any desired height by the adjustment of the arm 16 upon the sleeve. Surrounding the shaft 11 and rigidly secured to the bar 17 are the shields 18, formed, preferably, of bows of sheet metal arranged in a series with a narrow space between each pair, through which pass the forks 19 in their rotation. These shields bear upon the bundles of grain as carried underneath by the forks and press them down upon the knife, the spring 25 allowing them to rise against its tension to admit of the passage of large bundles without interfering with the operation of the machine, or the shields may be constructed of spring-metal, so as to bear with elastic pressure upon the bundles of grain. By being adjusted in an inclined position, the shields will also direct the bundles of grain thrown upon them so that they will pass over the knife, instead of falling back of the shields upon the table. They act also as fork-olearers, any loose straw which may cling to the forks being intercepted and brushed off as the forks pass between the shields. The chief value of the shields, however, consists in protecting shaft 11 from the straw, which would otherwise'wind upon and clog it.

As shown inthe drawings, the shaft 6 is arranged with a right motion, so as to drive the pitman and knife with a downward thrust, and the screw being a right-hand screw imparts to the fork-shaftaleft-hand rotation, so

that the forks convey the bundles of grain over the knife.

For a band-cutter adapted for the other side of the thrasher the parts are in areverse position, and the motion of the shafts opposite, to give the forks and knife the requisite motion.

If preferred, instead of the curved slot 14: and pin 15, by means of which, in connection with the crank 8, longitudinal rocking motion is imparted to the knife, a link may be used, as shown in detail in Fig. 4:, or any other equivalent means by which the motion may be produced. The knife may also, if preferred, be varied in form in any desired manner for more effective workas, for example, it may have a convex edge, as shown in detail, Fig. 5.

The driving machinery of the cutter may be protected by a suitable shield in any manner preferred to protect it from loose straw, and also as a protection to workman.

The shaft 6, being driven by a suitable power by means of the crank S and the pitman 9,: reciprocates the knife in its slot, and by means of the screw 7 and toothed wheel 10.the shaft 11 is rotated, carrying the forks downward and backward over the feed-table. The bundles of grain being placed on the inclined part of the table and transverse thereof are seized by the forks 19, carried over the knife and under the shields 18, and are thus pressed the size of the bundles, protect the shaft from:

loose straw, and clear the forks of any straw clinging to them.

I claim as my invention and provided with means by which it is given a longitudinal rocking motion as reciprocated, the shaft 11, arranged transversely of said table and above said knife, series of forks 19, arranged upon said shafts, shields 18, arranged between said forks and surrounding said shaft, and adapted to bear upon the bundles of grain as passed over the knife, and means, substantially as described, for reciprocating said knife and rotating said shaft, as and for the purposes set forth.

3. In'a band-cutter, the combination, with its table, of a knife arranged in a slot transversely thereof, means, substantially as described, for rocking said knife longitudinally, a crank-shaft connected to said knife and adapted to reciprocate the same, a rotating shaft arranged above said knife and parallel therewith, series of forks secured upon said shaft and adapted to engage and carry bundles of grain over the table, and shields arrangedbetween said series of forks and around said shaft and adapted to bear upon the bundles of grain as passed underneath, substantially as described.

4. The combination of the transverselyslotted feed-table 3, the rocking knife 13, arranged in said slot, the crank-shaft 8, connected to said knife, the spring-controlled shaft 11, arranged above and transverse of said table, the forks 19, secured to said shaft 11, the shields 18, arranged between said forks and surrounding said shaft 11, and means,

substantially as described, for rotating said shafts 8 and 11, substantially as and for the purposes set forth.

In testimony whereof I have hereunto set my hand this 3d day of June, 1889.

CARL CARLSON. In presence of- A. M. GASKILL, T. D. MERWIN. 

